DS1342U+ Maxim Integrated Products, DS1342U+ Datasheet - Page 6

• Manufacturer Part Number: DS1342U+
• Description: IC RTC I2C W/ALARM 8USOP
• Manufacturer: Maxim Integrated Products
• Type: Clock/Calendar/Alarmr

Specifications of DS1342U+

• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -

Low-Current I
6
PIN
—
1
2
3
4
5
6
7
8
CLKIN/INTA
SQW/INTB
NAME
TOP VIEW
CLKIN/INTA
GND
SDA
SCL
V
EP
X1
X2
CC
GND
X1
X2
1
2
3
4
Connections for a Standard 32.768kHz Quartz Crystal. The internal oscillator circuitry is
designed for operation with a crystal having a specified load capacitance (C
or 12.5pF (DS1342).
Clock Input/Active-Low Interrupt Output. This I/O pin is used to output an alarm interrupt or
accept an external clock input to drive the RTC counter. In the output mode, this is an open
drain and requires an external pullup resistor. If not used, connect this pin to ground.
Ground
Serial-Data Input/Output. SDA is the input/output pin for the I
open drain and requires an external pullup resistor.
Serial-Clock Input. SCL is used to synchronize data movement on the serial interface.
Square-Wave/Active-Low Interrupt Output. This pin is used to output a programmable square
wave or an alarm interrupt signal. This is a CMOS push-pull output and does not require an
external pullup resistor. If not used, this pin can be left unconnected.
DC Power Input. This pin should be decoupled using a 0.01FF or 0.1FF capacitor.
Exposed Pad (TDFN Only). Connect to GND or leave unconnected.
+
2
C RTCs for High-ESR Crystals
DS1341
DS1342
µ SOP
8
7
6
5
V
SQW/INTB
SCL
SDA
CC
FUNCTION
+
1
8
7
DS1341
DS1342
2
TDFN
2
C serial interface. The SDA pin is
6
3
Pin Configurations
EP
4
5
Pin Description
L
) of 6pF (DS1341)